The daughter of a man who has discovered radium on an African island is befriended by two people whose real goal is to keep the discovery to themselves.
Kenneth Harlan
Captain Harry Drake
Lucile Browne
Bonnie Adams
Walter Miller
Ben Arnold
Beulah Hutton
Aileen Calindos
Tom Ricketts
Professor Gerald Adams
William L. Thorne
Bull Black
Andy Devine
Briney
George Regas
Lascara
Everett Brown
Cebu
Jack Leonard
Ape
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